mental age the age level of mental ability of a person as gauged by standard intelligence tests.

age

(āj),

1. The period that has elapsed since birth.

2. One of the periods into which human life is divided, distinguished by physical evolution, equilibrium, and involution; for example, the seven ages of humankind are infancy, childhood, adolescence, young adulthood, middle life, senescence, and senility.

3. To grow old; to gradually develop changes in structure that are not due to preventable disease or trauma and that are associated with decreased functional capacity and an increased probability of death.

4. To artificially induce an appearance that is characteristic of one who has lived long or of a thing that has existed for a long time.

5. In dentistry materials science, the treatment of a material to stabilize or strengthen it by causing a coherent precipitate to form. A coherent precipitate is particle formation caused by clustering of atoms of one type as part of a lattice consisting of more than one atom type.

[F. âge, L. aetas]

age

(āj)

1. the duration, or the measure of time, of the existence of a person or object.

2. the measure of an attribute relative to the chronological age of an average normal individual.

achievement age the age of a person expressed as the chronologic age of a normal person showing the same proficiency in study.

bone age osseous development shown radiographically, stated in terms of the chronological age at which the development is ordinarily attained.

chronological age the measure of time elapsed since a person's birth.

fertilization age the age of a conceptus defined by the time elapsed since fertilization.

gestational age the age of a conceptus or pregnancy; in human clinical practice, timed from onset of the last normal menstrual period. Elsewhere the onset may be timed from estrus, coitus, artificial insemination, vaginal plug formation, fertilization, or implantation.

mental age the age level of mental ability of a person as gauged by standard intelligence tests.

age

Etymology: L, aetus, lifetime

1 a stage of development at which the body has arrived, as measured by physical and laboratory standards, to what is normal for a male or female of the same chronological age. See also mental age.

2 to grow old.

Age

noun The time period elapsed since birth; epoch.verb To grow old, senesce.

AGE

age

Medtalk noun The time period elapsed since birth. See Maternal age effect, Paternal age verbTo grow old, senesce.

age

(āj)

1. The period elapsed since birth.

2. One of the periods into which human life is divided, distinguished by physical evolution, equilibrium, and involution; e.g., the seven human ages are: infancy, childhood, adolescence, maturity, middle life, senescence, and senility.

3. To grow old; to gradually develop changes in structure that are not due to preventable disease or trauma and that are associated with decreased functional capacity and an increased probability of death.

4. To cause artificially the appearance characteristic of one who has lived long or of a thing that has existed for a long time.

5. To render the bond between a nerve agent and acetylcholinesterase refractory to disruption by an oxime antidote.

[F. âge, L. aetas]

age

(āj)

1. In dentistry materials-related science, treatment of a material to stabilize or strengthen it by forming a coherent precipitate that is particle formation caused by clustering of atoms of one type as part of a lattice consisting of more than one atom type.

2. One of the periods into which human life is divided.

[F. âge, L. aetas]

age,

n the period of time a person has existed or an object has existed.

age, biological,

n the age determined by physiology rather than chronology. Factors include changes in the physical structure of the body as well as changes in the performance of motor skills and sensory awareness.

age, chronologic,

n age determined by the passage of time since birth.

age determination,

n (by teeth), an estimate of age from the stage of tooth development and/or pattern of wear.

age distribution,

n a grouping of the persons within a population on the basis of birth date.

age

diseases which occur at particular ages, either because of changes in the animal's biochemistry or immunity or because of variations in exposure of the animals because of a change in management.

age descriptor

terms other than years used to indicate the age of animals, e.g. two-tooth, first-lactation.

age determination

in the absence of explicit records about birth dates the estimation of age is a frequent task for veterinarians. The eruption, then the growth of teeth to apposition and then the wear of the teeth are the best guide to age in horses, cattle, sheep and goat, but not in the pig. In the pig and the dog some assistance can be obtained from examination of the teeth, but the general appearance of the animal and the history are the best means. See also rule of six.

age distribution

the proportion of the total population which is in each of the specified age groups.

first joining age

a critical point in the economy of a herd or flock. In seasonal animal production systems unnecessary delay may cause loss of a year's productivity for each female. Starting too early may cause losses due to difficult parturition in small dams and a poor conception rate.

age groups

cattle and sheep being grazed extensively are commonly segregated into age groups because they are dealt with as groups for purposes of mating, vaccination, prophylactic treatment and eventually culling for old age.

age-matched control

in a comparison of performance between groups it is desirable to create the groups by pairing a series of treatment animals and control animals for all significant variables, of which age would be one of the most important.

age pigment

lipofuscin.

slaughter age

the age at which the animals in a group are to be slaughtered. Varies with the meat objective, the price in the market, opportunities for replacement and the capacity to carry additional animals on the feed available.

age-specific death rate

the death rate for a specified age group as a proportion of a total number of specified animal × time period, such as cow × years.

Patient discussion about age

Q. I would like to know the best age for pregnancy? Hi I am Deontae; I got married before 1 year. I and my wife planned to have a baby after 3 years. But now she is 25. I would like to know the best age for pregnancy? Which will help us to change our plan?

A. actually there is no best age for pregnancy (as far as i know), but some studies and research had shown that after 35 years old, a pregnancy is categorized as high risk, because there are some abnormalities and labor complication that are tend to happened (statistically) along with the increase of mother's age (such as: down syndrome, genetic disorder, post-partum bleeding, miscarriage, etc.)

so if your wife is now 25, i think you guys still have another 5-10 years to "accomplish" your family plan, hehehe...Good luck, and stay healthy always..

Q. when is the most common age to get any kind of cancer? is there is such age?

A. no, not really. but i guess the older you get the older something can pop out. the cells are dividing and multiplying all of our life, and cancer can occur because of mutation happened in the cells.

Q. Does eyesight always decrease with age? I am 45 years old and never had glasses. All my friends are starting to wear reading glasses. Should I expect this too?

A. This is what usually happens; your eyesight deteriorates as you get older. Here is a link to a few things you can do in order to protect your eyesight:http://www.nia.nih.gov/HealthInformation/Publications/eyes.htm

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